Rexall RX810, Инструкция по эксплуатации

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3.3B Common Sources of Errors
All efforts by the patient to support the arm can increase the blood pressure. Make sure you are in a
comfortable, relaxed position and do not activate any of the muscles in the measurement arm during the
measurement. Use a cushion for support if necessary.
ATTENTION
Comparable blood pressure measurements always require the same conditions with a peaceful
and calm environment. Ensure that you take measurements under the same conditions to obtain an
accurate estimate of blood pressure variation patterns.
• If the arm artery lies considerably lower or higher than the heart, an erroneous value of blood pressure is
measured. Each 15 cm difference in height results in a measurement error of 10 mmHg.
• A loose cuff causes false measurement values.
• With repeated measurements, blood accumulates in the arm, which can lead to false results. Consecutive
blood pressure measurements should be repeated after at least a 15-second pause or after the arm has
been held up in order to allow the accumulated blood to flow away.
3.3C Fitting the Cuff
a) Pass the end of the cuff through the flat metal ring so that a loop is formed. The
closure must be facing outward. (Ignore this step if the cuff has already been
prepared).
b) Wrap the cuff around your bare upper left arm. The rubber tube should be on
the inside of your arm extending downward to your hand.
c) Lay the cuff on the arm as illustrated. Make certain that the lower edge of the
cuff lies approximately ¾” to 1” (2 to 3 cm) above the elbow.
Important: The red material on the cuff must lie exactly over the brachial artery
which runs down the inner side of the arm.
d) Tighten the cuff by pulling the end and close the cuff.
e) There should be little free space between the arm and cuff. You should
be able to fit 2 fingers between your arm and the cuff. Clothing must
not restrict the arm. If any piece of clothing does, it must be removed.
If the cuff does not fit properly, you will get false measurement values.
Measure your arm circumference if you are not sure of proper fit.
f) Lay your arm on a table (palm upward) so the cuff is at the same height
as your heart. Make sure the tube is not kinked. You can adjust the level
of your arm by putting a cushion under your arm.
2–3 cm
Left arm
tube